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39 lines
1.2 KiB
Diff
39 lines
1.2 KiB
Diff
From 6b6d85cc36b148e26cf03f5a8ca412e694d11456 Mon Sep 17 00:00:00 2001
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From: Stefan Wahren <stefan.wahren@i2se.com>
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Date: Sun, 23 Dec 2018 21:59:17 +0100
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Subject: [PATCH 5/5] mmc: sdhci-iproc: handle mmc_of_parse() errors during
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probe
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We need to handle mmc_of_parse() errors during probe.
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This finally fixes the wifi regression on Raspberry Pi 3 series.
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In error case the wifi chip was permanently in reset because of
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the power sequence depending on the deferred probe of the GPIO expander.
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Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
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Cc: stable@vger.kernel.org
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Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
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Acked-by: Adrian Hunter <adrian.hunter@intel.com>
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---
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drivers/mmc/host/sdhci-iproc.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
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index 0db99057c44f..9d12c06c7fd6 100644
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--- a/drivers/mmc/host/sdhci-iproc.c
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+++ b/drivers/mmc/host/sdhci-iproc.c
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@@ -296,7 +296,10 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
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iproc_host->data = iproc_data;
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- mmc_of_parse(host->mmc);
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+ ret = mmc_of_parse(host->mmc);
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+ if (ret)
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+ goto err;
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+
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sdhci_get_property(pdev);
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host->mmc->caps |= iproc_host->data->mmc_caps;
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--
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2.19.2
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